کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4425821 1309114 2010 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Spatial uncoupling of biodegradation, soil respiration, and PAH concentration in a creosote contaminated soil
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Spatial uncoupling of biodegradation, soil respiration, and PAH concentration in a creosote contaminated soil
چکیده انگلیسی

Hotspots and coldspots of concentration and biodegradation of polycyclic aromatic hydrocarbons (PAHs) marginally overlapped at the 0.5–100 m scale in a creosote contaminated soil in southern Sweden, suggesting that concentration and biodegradation had little spatial co-variation. Biodegradation was substantial and its spatial variability considerable and highly irregular, but it had no spatial autocorrelation. The soil concentration of PAHs explained only 20–30% of the variance of their biodegradation. Soil respiration was spatially autocorrelated. The spatial uncoupling between biodegradation and soil respiration seemed to be governed by the aging of PAHs in the soil, since biodegradation of added 13C phenanthrene covaried with both soil respiration and microbial biomass. The latter two were also correlated with high concentrations of phospholipid fatty acids (PLFAs) that are common in gram-negative bacteria. However, several of the hotspots of biodegradation coincided with hotspots for the distribution of a PLFA indicative of fungal biomass.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environmental Pollution - Volume 158, Issue 9, September 2010, Pages 2865–2871
نویسندگان
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